package collection;
import java.util.Comparator;
import java.util.List;
import java.util.ArrayList;
import java.util.Collections;
/**
 * Collections.sort():用于对集合排序
 * 对整数集合进行排序
 */
public class SortString {
    public static void main(String[] args) {
        List<String> list = new ArrayList<>();
        /*list.add("hello");
        list.add("world");
        list.add("java");
        list.add("VAD");
        list.add("VOD");
        list.add("apple");
        list.add("你");
        list.add("我");*/
        list.add("王克晶");
        list.add("传奇老师很帅");
        list.add("伟超老师");
        System.out.println("原始List:"+list);
        Collections.sort(list);
        System.out.println("升序后List:"+list);
        Collections.sort(list, new Comparator<String>() {
            @Override
            public int compare(String o1, String o2) {
                //return o1.length()-o2.length();   //升序
                return o2.length()-o1.length();     //降序
            }
        });
        System.out.println("按长度排序后List:"+list);
    }
}
